CN105136711A - Method for detecting fixed carbon in sintering mixture - Google Patents
Method for detecting fixed carbon in sintering mixture Download PDFInfo
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- CN105136711A CN105136711A CN201510688440.5A CN201510688440A CN105136711A CN 105136711 A CN105136711 A CN 105136711A CN 201510688440 A CN201510688440 A CN 201510688440A CN 105136711 A CN105136711 A CN 105136711A
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- fixed carbon
- sinter mixture
- hydrochloric acid
- carbon
- suction filtration
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Abstract
The invention relates to a method for detecting fixed carbon in a sintering mixture. According to the method, by effectively separating the fixed carbon from other constituents in the sintering mixture and further adopting an infrared absorption spectrum method for conducting quantitative detection on the fixed carbon obtained after the separation, the content of the fixed carbon in the sintering mixture is measured accurately, and the problem that large deviation exists in a theoretical mixture calculation method is solved.
Description
Technical field
The invention belongs to chemical analysis technology field, particularly the detection method of fixed carbon in a kind of sinter mixture.
Background technology
Fixed carbon content fluctuation in sinter mixture, will cause SINTERING PRODUCTION unstable, thus affect quality and the production cost of sintering deposit.In conventional fuel, the detection of fixed carbon adopts calcination weight reduction, and owing to there is carbonate, FexOy, limonite, fixed carbon etc. containing water of crystallization in compound simultaneously, adopt weight reduction to be difficult to eliminate the decomposition of above-mentioned substance and reduction reaction to the impact of fixed carbon testing result.Current domestic and international each iron and steel enterprise all adopts and calculates fixed carbon content according to the theoretical value of batching, the feature of the method is simply, convenience, but the diversity of raw materials for sintering in actual production, the fixed carbon brought into and the channel of carbon differ, then error is comparatively large to adopt these computing method, is unfavorable for the stability contorting of SINTERING PRODUCTION.
Summary of the invention
For the deficiencies in the prior art, the object of this invention is to provide the detection method of fixed carbon in a kind of sinter mixture, the present invention is by being effectively separated with other compositions fixed carbon in sinter mixture, and then adopt infrared absorption spectroscopy quantitatively to detect to the fixed carbon after being separated, accurately record the content of fixed carbon in sinter mixture, solve the relatively large deviation problem that theoretical burden calculation method exists.
The technical solution used in the present invention is:
A detection method for fixed carbon in sinter mixture, step comprises:
A, add in hydrochloric acid solution by sinter mixture, heating makes test solution be in slight boiling condition, dissolves sinter mixture;
B, by dissolve after test solution carry out suction filtration while hot, insolubles is separated with solution;
C, measure the content of fixed carbon in the insolubles after clean dry with carbon and sulfur analytical instrument.
In described steps A, the ratio of sinter mixture and hydrochloric acid is 0.2g:40mL, and described hydrochloric acid solution is that use concentrated hydrochloric acid and water are formulated with volume ratio 1:1;
In described step B, suction filtration carries out in the suction filtration crucible being lined with acid-washed asbestos.
The present invention utilizes the materials such as the copmbined-carbon in sample and iron oxide to be dissolved in acid, and fixed carbon is insoluble to the feature of acid, acid dissolve is added in test portion, measure after fixed carbon in sample is effectively separated, the chemical reaction solving carbonate decomposition and iron oxide and carbon in traditional weight reduction affects problem to testing result, relative to more accurate, reliable according to the theoretical value result of calculation of batching, the directive function for SINTERING PRODUCTION is larger.
Embodiment
Parallelly take sinter mixture three parts of each 0.2g, be placed in three beakers respectively, in three beakers, add 40mL hydrochloric acid (1:1) respectively, low-temperature heat, make test solution be in slight boiling condition, dissolve test portion;
Test solution after dissolving is carried out suction filtration with the suction filtration crucible being lined with acid-washed asbestos while hot, and precipitation shifts completely and after cleaning, is transferred in three magnetic boats by acid-washed asbestos respectively together with precipitating;
Magnetic boat is placed in the drying in oven 1 hour of 200 DEG C;
Tubular furnace infrared absorption carbon sulphur instrument temperature is set as 1000 DEG C, takes the calibration curve that different quality benchmark calcium carbonate sets up carbon;
Measured on tubular furnace infrared absorption carbon sulphur instrument by magnetic boat after drying, the content obtaining fixed carbon is 5.20%, 5.11%, 5.25%.
Claims (3)
1. the detection method of fixed carbon in sinter mixture, step comprises:
A, add in hydrochloric acid solution by sinter mixture, heating makes test solution be in slight boiling condition, dissolves sinter mixture;
B, by dissolve after test solution carry out suction filtration while hot, insolubles is separated with solution;
C, measure the content of fixed carbon in the insolubles after clean dry with carbon and sulfur analytical instrument.
2. detection method as claimed in claim 1, is characterized in that: in described steps A, the ratio of sinter mixture and hydrochloric acid is 0.2g:40mL, described hydrochloric acid solution for concentrated hydrochloric acid and water formulated with volume ratio 1:1.
3. detection method as claimed in claim 1, is characterized in that: in described step B, suction filtration carries out in the suction filtration crucible being lined with acid-washed asbestos.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510688440.5A CN105136711A (en) | 2015-10-19 | 2015-10-19 | Method for detecting fixed carbon in sintering mixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510688440.5A CN105136711A (en) | 2015-10-19 | 2015-10-19 | Method for detecting fixed carbon in sintering mixture |
Publications (1)
| Publication Number | Publication Date |
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| CN105136711A true CN105136711A (en) | 2015-12-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201510688440.5A Pending CN105136711A (en) | 2015-10-19 | 2015-10-19 | Method for detecting fixed carbon in sintering mixture |
Country Status (1)
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4603119A (en) * | 1984-05-16 | 1986-07-29 | Alfons Karl | Process for production of activated carbon from lignite coke |
| CN104697953A (en) * | 2015-04-08 | 2015-06-10 | 芜湖新兴铸管有限责任公司 | Silicon carbide rapid determination method for infrared carbon and sulphur determinator |
-
2015
- 2015-10-19 CN CN201510688440.5A patent/CN105136711A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4603119A (en) * | 1984-05-16 | 1986-07-29 | Alfons Karl | Process for production of activated carbon from lignite coke |
| CN104697953A (en) * | 2015-04-08 | 2015-06-10 | 芜湖新兴铸管有限责任公司 | Silicon carbide rapid determination method for infrared carbon and sulphur determinator |
Non-Patent Citations (8)
| Title |
|---|
| 刘青桥 等: "电脑数显碳硫分析仪测定铁矿石烧结矿中碳硫", 《湖南冶金》 * |
| 穆春杰 等: "钢铁中游离碳的快速测定", 《兵器材料科学与工程》 * |
| 艾同捐 等: "《金属化学分析技术指南》", 31 August 1989, 贵州人民出版社 * |
| 陆明炯: "《实用机械工程手册》", 31 January 2004 * |
| 陈必友 等: "《工厂分析化验手册》", 30 September 2002 * |
| 鞍钢钢铁研究所 等: "《实用冶金分析-方法与基础》", 31 December 1990, 辽宁科学技术出版社 * |
| 首都钢铁研究所 等: "《钢铁原材料化学分析》", 31 December 1976 * |
| 高崇: "《实用建筑施工用钢材标准与检测技术手册》", 31 October 1997 * |
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Application publication date: 20151209 |